CA1179141A - Stationary grinding wheel dressing unit - Google Patents
Stationary grinding wheel dressing unitInfo
- Publication number
- CA1179141A CA1179141A CA000402723A CA402723A CA1179141A CA 1179141 A CA1179141 A CA 1179141A CA 000402723 A CA000402723 A CA 000402723A CA 402723 A CA402723 A CA 402723A CA 1179141 A CA1179141 A CA 1179141A
- Authority
- CA
- Canada
- Prior art keywords
- wheel
- grinding wheel
- grinding
- workhead
- dressing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
Abstract An interchangeable and stationary grinding wheel dressing means mounted on a cantilevered base unit having the grinding wheel carried to it for dressing.
Description
~7~
This invention relates generally to the grinding machine art, and more specifically, to a stationary wheel dressing unit mounted on bridge adjacent the grinding wheel with the grinding wheel traveling to the stationary dresser~
It is well known in the grinding machine art to dress the outside periphery of the abrasive grinaing wheel by several methods or forms; such as, a single point diamond, a multipoint diamond, rotary diamond, or diamond roll. The type of work being performed prescribes the dressing method which will provide optimum performance~ Moreover, dressers have been made a stationary unit and also a pivoted swinging arm unit.
According to the present invention there is provided a grinding machine having a machine bed and a workhead mounted on a workhead bridge, and including a longitudinal slide and a cross slide, and a grindin~ wheel head operatively provi~ed with a grinding wheel for operative engagement with a workpiece carried by the workhead. A stationary wheel dressing unit means is mounted on a cantilevered base unit, the cantilevered base unit being attached to the workhead bridge, and the cantilevered base unit including a base portion and a transverse portion.
The invention therefore relates to a dresser-for dressing the outside periphery of a grinding wheel by means of the stationary unit with the grinding wh~el adapted to travel to it. The use of a stationary dressing unit provides for sta~ility and accuracy required to obtain optim~n performance, which not only provides for a sb/j l simpler and more reliable method o~ dressing, but enhances diamond life as wellO This is in contrast to prior arrangements which had a movable dresser armO
Such arrangements have built-in spring rates-which can cause a poor dress conditionO Most single point, cluster and ro~ary dressers are interchangeable and use the sa~e common base-, Brief Description of the Drawin~
Figure 1- shows a perspective view disclosing a first illustrati~e embodiment of th~ grinding wheel berore i~ approaches the bore o~ the workpiece and th~
wheel dressing unit~
~ igur~ 2 is; a top view o~ the dressing cutter unit:..
Figu~ 3 is~a left end vie~ o~ the dressing
This invention relates generally to the grinding machine art, and more specifically, to a stationary wheel dressing unit mounted on bridge adjacent the grinding wheel with the grinding wheel traveling to the stationary dresser~
It is well known in the grinding machine art to dress the outside periphery of the abrasive grinaing wheel by several methods or forms; such as, a single point diamond, a multipoint diamond, rotary diamond, or diamond roll. The type of work being performed prescribes the dressing method which will provide optimum performance~ Moreover, dressers have been made a stationary unit and also a pivoted swinging arm unit.
According to the present invention there is provided a grinding machine having a machine bed and a workhead mounted on a workhead bridge, and including a longitudinal slide and a cross slide, and a grindin~ wheel head operatively provi~ed with a grinding wheel for operative engagement with a workpiece carried by the workhead. A stationary wheel dressing unit means is mounted on a cantilevered base unit, the cantilevered base unit being attached to the workhead bridge, and the cantilevered base unit including a base portion and a transverse portion.
The invention therefore relates to a dresser-for dressing the outside periphery of a grinding wheel by means of the stationary unit with the grinding wh~el adapted to travel to it. The use of a stationary dressing unit provides for sta~ility and accuracy required to obtain optim~n performance, which not only provides for a sb/j l simpler and more reliable method o~ dressing, but enhances diamond life as wellO This is in contrast to prior arrangements which had a movable dresser armO
Such arrangements have built-in spring rates-which can cause a poor dress conditionO Most single point, cluster and ro~ary dressers are interchangeable and use the sa~e common base-, Brief Description of the Drawin~
Figure 1- shows a perspective view disclosing a first illustrati~e embodiment of th~ grinding wheel berore i~ approaches the bore o~ the workpiece and th~
wheel dressing unit~
~ igur~ 2 is; a top view o~ the dressing cutter unit:..
Figu~ 3 is~a left end vie~ o~ the dressing
2~ ~utter unit~
., Figure 4 is another embod iment o the dressing unit showing a to~ view of a single point diamond dresserO
2~` .
~igure 5 is a righ~ end view of the wheel dress-,~ ing cutter unit before mounting to the base as shown in Figure ~.
Figure 6 is a further embodiment of the wheel dressing ~utter s~owing a plurality o~ single point diamond dressers, ; Fi~ure 7 is a perspective view of another embodi-men~ showing the grinding ~heel before it approaches the workpie~e and th~ cantilevered dressing cutter ~ounted on the front o the ma~hine.
. , Figure 8 is a close-up perspective view shown in Figure 7 illustrating the cantilevered wheel dressing cutter unit.
Best Mode of Carr~ing Out the Invention Referring now to the drawings, and in particular to Figure 1, the numeral 10 generally designates a one-station electro-mechanical internal grinding machine wlth one grinding whee7 spindle on a cross slide, and embodying the principles disclosed in U.S. Patent number 4,419,612, issued December 6, 1983.
The grinding machine 10 includes a conventlonal bed or b.ridge member 12 on which is operatively mounted a conventional workhead 13. The workhead 13 may be of any suitable conventional structure and it comprises a chucking fixture 15 for holding a workpiece. The chucking fixture is adapted to be rotated by a motor and an operatively connected pulley means disclosed in the above-mentioned copellding application.
As shown in Figure 1, a bore grindi.ng ~heel 17 is operatively carried on the compound slide assembly 19, on the right end of the machi.ne 10, which comprises the longitudinal and cross slides disclosed in the above-noted copending application. It will be understood that the control system of the present inven-tion is capable of controlling any combination of motions of a grinding wheel on the compound slide assembly.
The grinding wheel dressing unit 20 is mounted on the workhead bridge 12 on a base e~tension member 21 whi~h extends or cantilevers over the center of the machine grinding area. The dressing unit 20 is secured
., Figure 4 is another embod iment o the dressing unit showing a to~ view of a single point diamond dresserO
2~` .
~igure 5 is a righ~ end view of the wheel dress-,~ ing cutter unit before mounting to the base as shown in Figure ~.
Figure 6 is a further embodiment of the wheel dressing ~utter s~owing a plurality o~ single point diamond dressers, ; Fi~ure 7 is a perspective view of another embodi-men~ showing the grinding ~heel before it approaches the workpie~e and th~ cantilevered dressing cutter ~ounted on the front o the ma~hine.
. , Figure 8 is a close-up perspective view shown in Figure 7 illustrating the cantilevered wheel dressing cutter unit.
Best Mode of Carr~ing Out the Invention Referring now to the drawings, and in particular to Figure 1, the numeral 10 generally designates a one-station electro-mechanical internal grinding machine wlth one grinding whee7 spindle on a cross slide, and embodying the principles disclosed in U.S. Patent number 4,419,612, issued December 6, 1983.
The grinding machine 10 includes a conventlonal bed or b.ridge member 12 on which is operatively mounted a conventional workhead 13. The workhead 13 may be of any suitable conventional structure and it comprises a chucking fixture 15 for holding a workpiece. The chucking fixture is adapted to be rotated by a motor and an operatively connected pulley means disclosed in the above-mentioned copellding application.
As shown in Figure 1, a bore grindi.ng ~heel 17 is operatively carried on the compound slide assembly 19, on the right end of the machi.ne 10, which comprises the longitudinal and cross slides disclosed in the above-noted copending application. It will be understood that the control system of the present inven-tion is capable of controlling any combination of motions of a grinding wheel on the compound slide assembly.
The grinding wheel dressing unit 20 is mounted on the workhead bridge 12 on a base e~tension member 21 whi~h extends or cantilevers over the center of the machine grinding area. The dressing unit 20 is secured
- 3 -sb/~1 by means of bolt~ 23 slidable in T-slots 25 of the ~ase extension member 2.1, as shown in Figure 2.
~igures 2 and 3 illustrate the general structural layout which shows the dressing unit 20 comprising a base 31 adapted ~o be slidabIe and secured in a longitu--dinal direction by means o~ bolts 23 and having trans -verse T-slots 2S on t~e uppermost top portion~ SlidabIy mounted on the base 31 by means of transverse slots 33 1a is the slide- base unit 35~ which is secured thereto by means of a pluraLit~ o~ bolts 37O. It is illustrated in.
Figure- ~ that th~ slide base unit 35 is adapted to be moved and positioned by means of slots 33 and. 25 and secured thereta by a plurality of:bolts 37 and 23 ~espectively~
~ he slide base unit 35 comprises~ a flat- bed portion 41 and~a transverse portion 43 extendinq upwardly to form a~side support or wall ~o~ the dressing 20. cutter 45~ The stationary dressing cutter unit 45 illustrated. in Figures 1, ~ and 3 comprises a rotatable dressing cutter 47` which dresses the grinding wheel 17 as the grinding whe~l 17 moves on its compound slide past the dressinq cutter 47 Figure 4 shows another embodimen~ wherein the dressing cutter: unit 55 comprises a single point diamond 5~ mounted: in bore 54 and attached.on ~he end thereo~ by means of screw 58. The dressing cutter unit SS is secured to the transverse portion 43 of the slide : base uni~ 35 by means of bolts 59. As illustrated in Figure 5, the dressing cutter unit 55 includes a slot 61 for purposes to be disclosed hereinafter.
Figure 6 shows another embodiment comprisins a facing cutter 7~ mounted to t~e body of cutter 55 by means of bolts 63 co~nected to nuts 66 slidably disposed within an undercut trac~ of slot 61~ The dressing cutter 70 includes an extension brace 65 ha~ing longitudinal slots 67~ 69 whereby a facing cutte~ brace 71 is attached thereto by means of bolts.
5 73~ The facing cut~er brace 71 includes a single point diam~nd 75 and is adapted to dress the end o the grinding wheel.
As illustrated in Eigures 7 and 8, the grinding wheel 17 is operatively carried on the compound slide assembly 1-3, on the right end of the machine 10r which comprises the longitudinal and cross slides.. The grind.ing. wheel is adapted to be rotated by-a motor 75 an~ operatively connected pulley means 77, in a conven-15` tional.manner~. The wheel. dressing cutting unit 81 ismounted: i~ cantilever ~ashion ~o the bridge 83 o~ the workhead.at the fro~t end of the machine 10. The ~ressing cutter. 85 is attached to the can~ilevere~
dressing cutter unit 8t in. a similar manner hereto~or . 20 disclosed.
.
In.operation, the grinding wheel 17 is. rotated t~-grind the bore or face or any combination thereof~
Th~ longitudinal slide provides the grinding wheel 17 with a sequence of movements such as rapid forward .~ traverse, slow infeed, hig~ speed reciprocation an~ bac~-off retrac~ion.. The. cross slide provides the grinding wAeel 17 with positioning movements and compensation movements to compensate for th~ wearing away of the grinding wheel in the grinding o~ each part. Th~ control system of. the present invention is disclQsed in copending a~orementioned patent application and need. not be discussed in detail herein. ~owever, it is understood that. ater the programmed grinding operations have been oarried out by the grinding wheel 17~ it is retracted from the worXpieoe and dressed for further grinding operations~ That is, the grinding -6- :
wheel 17 is carried on the compound slide over to the wheel dressing unit 81 and dressed by a single point diamond, or a diamond roll, or a rotary diamond, or a diamond clus~er such as.disclosed herein~. The stationary S uni~ o~ the dresser can be rigidly clamped and formed w.ith reIatively stif~ plate segments that define a stable accurately posi~ioned platform for the dresser cutter which has a reduced~ spring ra~e~ Th~ dresser cutter is positioned more accurately to provide for a lQ more- accurate and sta~le method of dressing the grinding wheel which not on~ is simple and more reliable, but enhances diamond life as well_ As~disclosed, mos~ single point, cluster and rotary dresser unlts are interchangeable and use the sam~
commo~ stable stationary base..
~igures 2 and 3 illustrate the general structural layout which shows the dressing unit 20 comprising a base 31 adapted ~o be slidabIe and secured in a longitu--dinal direction by means o~ bolts 23 and having trans -verse T-slots 2S on t~e uppermost top portion~ SlidabIy mounted on the base 31 by means of transverse slots 33 1a is the slide- base unit 35~ which is secured thereto by means of a pluraLit~ o~ bolts 37O. It is illustrated in.
Figure- ~ that th~ slide base unit 35 is adapted to be moved and positioned by means of slots 33 and. 25 and secured thereta by a plurality of:bolts 37 and 23 ~espectively~
~ he slide base unit 35 comprises~ a flat- bed portion 41 and~a transverse portion 43 extendinq upwardly to form a~side support or wall ~o~ the dressing 20. cutter 45~ The stationary dressing cutter unit 45 illustrated. in Figures 1, ~ and 3 comprises a rotatable dressing cutter 47` which dresses the grinding wheel 17 as the grinding whe~l 17 moves on its compound slide past the dressinq cutter 47 Figure 4 shows another embodimen~ wherein the dressing cutter: unit 55 comprises a single point diamond 5~ mounted: in bore 54 and attached.on ~he end thereo~ by means of screw 58. The dressing cutter unit SS is secured to the transverse portion 43 of the slide : base uni~ 35 by means of bolts 59. As illustrated in Figure 5, the dressing cutter unit 55 includes a slot 61 for purposes to be disclosed hereinafter.
Figure 6 shows another embodiment comprisins a facing cutter 7~ mounted to t~e body of cutter 55 by means of bolts 63 co~nected to nuts 66 slidably disposed within an undercut trac~ of slot 61~ The dressing cutter 70 includes an extension brace 65 ha~ing longitudinal slots 67~ 69 whereby a facing cutte~ brace 71 is attached thereto by means of bolts.
5 73~ The facing cut~er brace 71 includes a single point diam~nd 75 and is adapted to dress the end o the grinding wheel.
As illustrated in Eigures 7 and 8, the grinding wheel 17 is operatively carried on the compound slide assembly 1-3, on the right end of the machine 10r which comprises the longitudinal and cross slides.. The grind.ing. wheel is adapted to be rotated by-a motor 75 an~ operatively connected pulley means 77, in a conven-15` tional.manner~. The wheel. dressing cutting unit 81 ismounted: i~ cantilever ~ashion ~o the bridge 83 o~ the workhead.at the fro~t end of the machine 10. The ~ressing cutter. 85 is attached to the can~ilevere~
dressing cutter unit 8t in. a similar manner hereto~or . 20 disclosed.
.
In.operation, the grinding wheel 17 is. rotated t~-grind the bore or face or any combination thereof~
Th~ longitudinal slide provides the grinding wheel 17 with a sequence of movements such as rapid forward .~ traverse, slow infeed, hig~ speed reciprocation an~ bac~-off retrac~ion.. The. cross slide provides the grinding wAeel 17 with positioning movements and compensation movements to compensate for th~ wearing away of the grinding wheel in the grinding o~ each part. Th~ control system of. the present invention is disclQsed in copending a~orementioned patent application and need. not be discussed in detail herein. ~owever, it is understood that. ater the programmed grinding operations have been oarried out by the grinding wheel 17~ it is retracted from the worXpieoe and dressed for further grinding operations~ That is, the grinding -6- :
wheel 17 is carried on the compound slide over to the wheel dressing unit 81 and dressed by a single point diamond, or a diamond roll, or a rotary diamond, or a diamond clus~er such as.disclosed herein~. The stationary S uni~ o~ the dresser can be rigidly clamped and formed w.ith reIatively stif~ plate segments that define a stable accurately posi~ioned platform for the dresser cutter which has a reduced~ spring ra~e~ Th~ dresser cutter is positioned more accurately to provide for a lQ more- accurate and sta~le method of dressing the grinding wheel which not on~ is simple and more reliable, but enhances diamond life as well_ As~disclosed, mos~ single point, cluster and rotary dresser unlts are interchangeable and use the sam~
commo~ stable stationary base..
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A grinding machine having a machine bed, a workhead mounted on a workhead bridge, a longitudinal slide, a cross slide, and a grinding wheel head operatively provided with a grinding wheel for operative engagement with a workpiece carried by said workhead, characterized in that:
(a) a stationary wheel dressing unit means mounted on a cantilevered base unit;
(b) said cantilevered base unit attached to said workhead bridge; and (c) said cantilevered base unit including a base portion and a transverse portion.
(a) a stationary wheel dressing unit means mounted on a cantilevered base unit;
(b) said cantilevered base unit attached to said workhead bridge; and (c) said cantilevered base unit including a base portion and a transverse portion.
2. The invention as defined in claim 1 wherein said wheel dressing unit comprises a single point diamond.
3. The invention as defined in claim 1 wherein said wheel dressing unit comprises a rotary diamond cutter.
4. The invention as defined in claim 1 wherein said wheel dressing unit comprises a radius dresser.
5. The invention as defined in claim 1 wherein said wheel dressing unit comprises a plurality of single point diamond dressers adapted to dress bore and face of a grinding wheel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/262,233 US4450651A (en) | 1981-05-11 | 1981-05-11 | Stationary grinding wheel dressing unit |
| US262,233 | 1981-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1179141A true CA1179141A (en) | 1984-12-11 |
Family
ID=22996718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000402723A Expired CA1179141A (en) | 1981-05-11 | 1982-05-11 | Stationary grinding wheel dressing unit |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4450651A (en) |
| CA (1) | CA1179141A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3320042A1 (en) * | 1983-06-03 | 1984-12-13 | Dieter Dr.-Ing. 7505 Ettlingen Wiener | METHOD FOR GRINDING PRE-GEARED AND GRINDING MACHINE FOR CARRYING OUT THIS METHOD |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2513228A (en) * | 1947-02-25 | 1950-06-27 | Bryant Grinder Corp | Nozzle grinding machine |
| US2771714A (en) * | 1954-03-09 | 1956-11-27 | Heald Machine Co | Internal grinding machine |
| US3209498A (en) * | 1963-07-09 | 1965-10-05 | Albert H Dall | Machine tool rigidity control mechanism |
| US3553893A (en) * | 1968-02-28 | 1971-01-12 | Lindner Gmbh Herbert | Method and apparatus for dressing grinding wheels |
| US3714741A (en) * | 1971-02-24 | 1973-02-06 | Cincinnati Milacron Heald | Grinding machine with size controlled dressing means |
| US3739528A (en) * | 1971-05-17 | 1973-06-19 | Cincinnati Milacron Heald | Grinding machine |
| US3798840A (en) * | 1972-04-14 | 1974-03-26 | Cincinnati Milacron Heald | Grinding machine with a cam-controlled dressing apparatus |
| JPS5259391A (en) * | 1975-11-11 | 1977-05-16 | Seiko Seiki Kk | Method of controlling dressing |
| US4170851A (en) * | 1977-09-20 | 1979-10-16 | Cincinnati Milacron Heald Corp. | Grinding machine |
-
1981
- 1981-05-11 US US06/262,233 patent/US4450651A/en not_active Expired - Fee Related
-
1982
- 1982-05-11 CA CA000402723A patent/CA1179141A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4450651A (en) | 1984-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5766057A (en) | Centerless grinding machine | |
| MY132625A (en) | Improvements in and relating to grinding and polishing machines | |
| EP0178843A2 (en) | Surface grinding machine | |
| US5551908A (en) | Centerless grinder and wheel truing device therefor | |
| JPS61244455A (en) | Grinder | |
| GB1565868A (en) | Whell dressing | |
| CA1179141A (en) | Stationary grinding wheel dressing unit | |
| GB2226783A (en) | Double-end surface grinding machine | |
| US3841200A (en) | Production of bodies of revolution | |
| US4718196A (en) | Grinding machine workhead fitted with a dressing tool | |
| US3813818A (en) | Profile grinder | |
| US3816996A (en) | Grinding machine | |
| US4265053A (en) | Apparatus for grinding cutting tools | |
| JP2788707B2 (en) | Grinder | |
| JPS61146471A (en) | Dressing device | |
| US2412653A (en) | Form tool generating fixture | |
| JP4090153B2 (en) | Peripheral surface grinding apparatus and grinding method for cylindrical workpiece | |
| US2956377A (en) | Grinding machine and method | |
| JPH06320421A (en) | Modifying device for grinding wheel in centerless grinding machine | |
| JP2676054B2 (en) | Method and apparatus for modifying a grinding wheel for engine valve grinding in a centerless grinding machine | |
| CN2384737Y (en) | Trimming regulator of grinding head for stone material edging machine | |
| CN2136115Y (en) | Grinder for woodworking lathing workpiece | |
| JP3637160B2 (en) | Woodworking milling machine and side milling cutter | |
| GB9801763D0 (en) | Machines and methods suitable for use in disintegration of rubber tyres | |
| KR20000009932U (en) | Auxiliary Magnetic Table Tilt Angle Adjuster of Grinding Machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |